Improvement in lumber-driers



J. .BRAKELY. Lumber Drier.

No. 76,591. Patented April 14, 1868.

REPETERB. PkoTo-u'moeRAPuER, WASHINGTON, D c.

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' JOSEPH BRAKELEY, OF BORDENTOWN, NEW'JERSEY Letters 'Patent No. 76,591,dated April 14, 1868.

IMPROVEMENT In LUMBER-DRIBRS.

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r0 ALL WHOM IT MAY ooncnnnz Be it known that I, JOSEPH BRAKELEY, ofBordcntown, in the county of Burlington, and in the State of New Jersey,have invented certain new and useful Improvements in Drying Lumber; anddo hereby declare that the following is a full, clear, and exactdescription thereoffrei'crcnce being had to the accompanying drawings,and to the letters of reference marked thereon. i I

In the annexed drawings, making part of this specification, A representsa cylindrical or other suitablyshaped metallic chamber, which is made ofany desirable size for containing lumber which is to be dried. Thischamber is surrounded with a metallic case, B, a space being leftbetween the case and the chamber to contain steam. I V

E represents-a pipe which leads into the case-B, and G represents asteam-pipc which leads from a steamboiler into the pipe E.

H represents a pipe which'leads fromthe chamber A, through the rear endof the case, and which connects with the pipe E near its upper end. Thispipe H is provided with a stop-cock, I. The lower end of pipe G extendsinto pipe E beyond thcjunction of the pipe H, so that in injecting steaminto the case it will be conveyed in pipe G beyond themeuth of pipe H.

J represents a small pipe, which is providecl'with a stop-cock, andwhich passes from the rear end of the chamber A through the case B, asshown.

D represents a pipe provided with a stop-cock which leads from thebottom or under side of the case B, the object of which is to. allow ofthe escape of condensed steam, or steam itself, when a surplus has beensupplied to the case. V I

In using this invention the lumber is introduced, into the chamber Athrough 8.11001 at C. The door is then closed, and a stop-cock in pipe Gbeing'opened, steam from the boiler is injected through pipes G and Einto the case B. The steam immediately surrounds the chamberA, and beatsit so, that the process of drying commences within it. When the vaporfrom the drying lumber commences to accumulate, the stop-cockI of pipe His opened, and the vapor is drawn from the chamber by the current of.steam passing ,through the pipe E below the mouth of the pipe H,creating a vacuum at the mouth of pipe H, and thereby drawing the vaporinto the case B, to assist in heating the chamber A. I by this meansutilize the hot vapor, as it is given off from the lumber, and as thecurrent of steam through pipe E has a tendency to produce a vacuum inchamber A, the vapor is more efi'ectually drawn away from the lumberthan it would be otherwise, and none can remain to be absorbed or takenup by the lumber, which has -once been expelled,

After the lumber has been sufliciently dried, thestop-cock Iis closedand the cock of pipe .1 is'o'pened. By this means v'apor is preventedfrom returning to the chamber, and air is admitted through pipe J, sothat the door at O can be readily opened for removing the lumber.

Having thus fully described my invention, what I claim as new, anddesire tosecurc by Letters Patent, is

1. The chamber A and case B, used in combination with the pipes H, E,and G, whereby I am enabled to apply'heat to the chamber by means ofsteam, and at the same time draw oil and utilize the vapor from chamberA, as and for the purpose set forth. r

2. The use of a pipe leading from tho lumber-chamber into thcpipe whichsupplies steam for heating said chamber, for the purpose of drawing awayand utilizing the hot vapor from the lumber, substantially as herein setforth.

In testimony thatI claim the foregoing, I have hereunto set my hand,this 20th day of March, 1868.

JOSEPH BRAKELEY.

Witnesses:

A. A. YEATMAN, V. D. Srocxenrnen.

